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312961 (1997 SG30)
Classification: Jupiter Trojan          SPK-ID: 2312961
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08175063330514337 6.0559e-08  
a 5.239011483601534 2.042e-07 au
q 4.81071897692419 4.4511e-07 au
i 6.133453783636335 7.8403e-06 deg
node 18.925907393695 5.9135e-05 deg
peri 63.89384999892044 8.9794e-05 deg
M 280.5798311387629 7.5485e-05 deg
tp 2459966.775032116032
(2023-Jan-22.27503212)
0.00095606 TDB
period 4379.983278171449
11.99
0.00025608
7.011e-07
d
yr
n .0821920946123549 4.8054e-09 deg/d
Q 5.667303990278879 2.209e-07 au
  Orbit Determination Parameters
   # obs. used (total)      174  
   data-arc span      8340 days (22.83 yr)  
   first obs. used      1997-09-30  
   last obs. used      2020-07-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56806  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-25 20:10:31  

Additional Information
 Earth MOID = 3.83227 au 
 Jupiter MOID = .120661 au 
 T_jup = 2.982 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.6   n/a MPO455307  

312961 (1997 SG30)          Discovered 1997-Sep-30 by Spacewatch at Kitt Peak
Reference: 20120207/Numbers.arcLast Updated: 2012-02-09

Alternate Designations
 1997 SG30 = 2008 QF42 = 2009 VK60 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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